JP2017083044A - Water heater - Google Patents
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- JP2017083044A JP2017083044A JP2015209695A JP2015209695A JP2017083044A JP 2017083044 A JP2017083044 A JP 2017083044A JP 2015209695 A JP2015209695 A JP 2015209695A JP 2015209695 A JP2015209695 A JP 2015209695A JP 2017083044 A JP2017083044 A JP 2017083044A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 238000002485 combustion reaction Methods 0.000 claims description 26
- 239000002737 fuel gas Substances 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 5
- 239000007789 gas Substances 0.000 description 9
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 239000000446 fuel Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 239000000470 constituent Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H8/00—Fluid heaters characterised by means for extracting latent heat from flue gases by means of condensation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/62—Mixing devices; Mixing tubes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L5/00—Blast-producing apparatus before the fire
- F23L5/02—Arrangements of fans or blowers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
- F24H1/14—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
- F24H1/145—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form using fluid fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/02—Casings; Cover lids; Ornamental panels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1832—Arrangement or mounting of combustion heating means, e.g. grates or burners
- F24H9/1836—Arrangement or mounting of combustion heating means, e.g. grates or burners using fluid fuel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Housings, Intake/Discharge, And Installation Of Fluid Heaters (AREA)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
- Details Of Fluid Heaters (AREA)
Abstract
Description
本発明は、給湯器、特に、下向き燃焼式のバーナを有する給湯器に関する。 The present invention relates to a water heater, and more particularly to a water heater having a downward combustion burner.
図６に示すものは、燃焼面(30a)が下向きとなるようにバーナボディ(40)の下面に設置された下向き燃焼式の平面バーナ(3a)を有する給湯器であって、バーナボディ(40)はケーシング(4)の上部域に設けられており、平面バーナ(3a)の燃焼面(30a)の下方に、顕熱吸収型の一次熱交換器(311)が、さらにその下方に、潜熱吸収型の二次熱交換器(321)が備えられている。
この種のガス給湯器では、ファンケース(41)内のファン（図示せず）を回転させることにより取り込んだ空気を全て、燃焼用一次空気として、燃焼面(30a)が下向きとなるようにバーナボディ(40)に設けられた下向き燃焼タイプの平面バーナ(3a)に送り込まれる。燃焼ガスは、平面バーナ(3a)の上方に設けられたガス供給路(44)から複数のガスノズル(42)を介して供給され、前述の燃焼用一次空気と混合されて平面バーナ(3a)に送り込まれる。
FIG. 6 shows a water heater having a downward combustion type flat burner (3a) installed on the lower surface of the burner body (40) so that the combustion surface (30a) faces downward, and the burner body (40 ) Is provided in the upper region of the casing (4), a sensible heat absorption type primary heat exchanger (311) is located below the combustion surface (30a) of the flat burner (3a), and further below it is latent heat. An absorption-type secondary heat exchanger (321) is provided.
In this type of gas water heater, all the air taken in by rotating a fan (not shown) in the fan case (41) is used as primary combustion air so that the combustion surface (30a) faces downward. It is fed into a downward burning type flat burner (3a) provided on the body (40). Combustion gas is supplied through a plurality of gas nozzles (42) from a gas supply path (44) provided above the planar burner (3a), and mixed with the above-described primary combustion air to the planar burner (3a). It is sent.
このものでは、ケーシング(4)の上部域の嵩をできるだけ低くするために、ファンケース(41)は縦に起立させることなく、同図に示すように、横向きに寝かせて設置されており、ファンケース(41)の吹出口(45)を、バーナボディ(40)の側面に開設された取込口(310)と連通するように対向させている。これにより、バーナボディ(40)とファンケース(41)とは左右に並列するように設置されるから、ケーシング(4)全体の高さが抑えられる。 In this case, in order to reduce the bulk of the upper area of the casing (4) as much as possible, the fan case (41) is installed laid sideways as shown in the figure without standing upright. The air outlet (45) of the case (41) is opposed to communicate with the intake (310) opened on the side surface of the burner body (40). As a result, the burner body (40) and the fan case (41) are installed so as to be juxtaposed in the left and right directions, so that the overall height of the casing (4) can be suppressed.
しかしながら、この設置態様では、ファンも寝かせた状態で設置されているから、ファンの径が大きくなると、ファンケース(41)の径も大きくなる。この場合、同図に示すように、ファンケース(41)をバーナボディ(40)の側方に設けた場合は、ケーシング(4)の左右方向の幅が大きくなってしまう。また、ファンケース(41)をバーナボディ(40)よりも前方又は後方に位置するように設けた場合は、ケーシング(4)の奥行きが大きくなってしまうという問題がある。 However, in this installation mode, since the fan is installed in the laid state, the diameter of the fan case (41) increases as the diameter of the fan increases. In this case, as shown in the figure, when the fan case (41) is provided on the side of the burner body (40), the lateral width of the casing (4) becomes large. Further, when the fan case (41) is provided so as to be positioned forward or rearward of the burner body (40), there is a problem that the depth of the casing (4) becomes large.
本発明は、上記課題を解決するためになされたものであり、下向きの燃焼面を有する全一次空気燃焼式のバーナを備えた給湯器において、ケーシングを、高さ方向はもちろん、左右方向、さらには奥行き方向にもコンパクトにできるようにすると共に、ファンケースのバーナボディへの取付け作業も容易にできるようにすることを課題とする。 The present invention has been made to solve the above problems, and in a water heater provided with an all-primary air combustion type burner having a downward combustion surface, a casing is made to have a horizontal direction, as well as a height direction. An object of the present invention is to make it compact in the depth direction as well as to easily attach the fan case to the burner body.
本発明は、前方に開口部を有するケーシング本体と、前記開口部を開閉する開閉扉とを有するケーシング内に、
下向きの燃焼面を有する平面バーナが備えられたバーナボディと、
前記バーナボディと連通すると共に、ファンを回転させるモータが上方に設けられ且つ 空気を取り込む給気口が下方に開放するように横倒し状態に設置されるファンケースと、
前記ファンケース内に収容され且つ燃焼用空気と燃料ガスの混合気を前記バーナボディ内へ送り込むファンとを備える給湯器であって、
前記ファンは前記モータ側から見た平面視にて右回り又は左回りの遠心ファンであり、これが収容されるファンケースはスクロールケーシングであり、
前記バーナボディは、下面に前記平面バーナを有するバーナボディ本体と、前記バーナボディの上面の所定位置に連通状態で突設され且つ前記ファンケースの空気吹出口と対向する空気取込口が側方に開口する給気導入部とからなり、
前記給気導入部のうち、前記空気取込口が開口している側面をファン取付面とし、
前記ファンが右回りファンの場合は、前記ファンケースは前記バーナボディの右側に設置されると共に、前記ファン取付面は前方又は斜め右前方を向いて設けられ、左回りファンの場合は、前記ファンケースは前記バーナボディの左側に設置されると共に、前記ファン取付面は前方又は斜め左前方を向いて設けられる給湯器である。
The present invention, in a casing having a casing body having an opening at the front, and an opening and closing door for opening and closing the opening,
A burner body with a planar burner having a downward burning surface;
A fan case that communicates with the burner body, is provided with a motor that rotates the fan on the upper side, and is installed in a laid state so that an air intake port that takes in air opens downward;
A water heater comprising a fan housed in the fan case and sending a mixture of combustion air and fuel gas into the burner body,
The fan is a clockwise or counterclockwise centrifugal fan in a plan view seen from the motor side, and a fan case in which the fan is accommodated is a scroll casing,
The burner body has a burner body main body having the planar burner on the lower surface, an air intake port that protrudes in a communicating state at a predetermined position on the upper surface of the burner body and faces the air outlet of the fan case, And an air supply introduction part that opens to
Of the air supply introduction part, the side surface of the air intake opening is a fan mounting surface,
When the fan is a clockwise fan, the fan case is installed on the right side of the burner body, and the fan mounting surface is provided facing forward or diagonally right front. When the fan is a counterclockwise fan, the fan The case is a water heater provided on the left side of the burner body and the fan mounting surface facing forward or diagonally left front.
上記給湯器では、バーナボディの側方に位置されたファンケースの空気吹出口から吹き出される燃焼用の混合気は、空気吹出口に連通状態に対向する空気取込口から給気導入部へ送られ、平面バーナを具備するバーナボディ本体内に導入される。
ファンケース内に収容されるファンが右回りファンの場合では、バーナボディとしては、給気導入部のファン取付面が前方又は斜め右前方を向くものが採用され、ファンケースはバーナボディの右側に配設される。左回りファンの場合では、ファン取付面が前方又は斜め左前方を向いた給気導入部を有するバーナボディが採用され、ファンケースはバーナボディの左側に配設される。
バーナボディ本体の上面に突設させた給気導入部のファン取付面にファンケースを取付けると、両者の接合面はバーナボディ本体上に位置することから、バーナボディ本体の上面にファンケースの一部が重なる態様となる。また、ファンケースの前後方向の長さをバーナボディ本体の前後方向の長さより小さく設定しておけば、バーナボディとファンケースとを接合させた接合体の大きさは、左右方向及び前後方向においてコンパクトとなり、ケーシングの上部域の横幅及び奥行きを小さくすることができる。
また、ファンの回転方向に関わらず、ファンケースが取り付けられる給気導入部のファン取付面は前方又は斜め前方に向いているから、給気導入部のファン取付面に対するファンケースの取り付けをケーシング本体の開放部側から目で確認しながら行うことができる。
In the water heater, the combustion air-fuel mixture blown out from the air outlet of the fan case located on the side of the burner body is supplied from the air intake opening facing the air outlet to the air supply inlet. Sent and introduced into the burner body body with a planar burner.
When the fan housed in the fan case is a right-handed fan, the burner body with the air supply introduction part with the fan mounting surface facing forward or diagonally right front is used, and the fan case is on the right side of the burner body. Arranged. In the case of a counterclockwise fan, a burner body having an air supply introduction portion with the fan mounting surface facing forward or obliquely left front is employed, and the fan case is disposed on the left side of the burner body.
When the fan case is mounted on the fan mounting surface of the air supply inlet that protrudes from the upper surface of the burner body body, the joint surface of both is located on the burner body body. It becomes the aspect which a part overlaps. In addition, if the length of the fan case in the front-rear direction is set to be smaller than the length of the burner body main body in the front-rear direction, the size of the joined body that joins the burner body and the fan case is It becomes compact and the width and depth of the upper area of the casing can be reduced.
In addition, since the fan mounting surface of the air supply introduction portion to which the fan case is attached faces forward or obliquely forward regardless of the rotation direction of the fan, the fan case is attached to the fan mounting surface of the air supply introduction portion. It can carry out while confirming visually from the open part side.
上記給湯器において、好ましくは、前記ファン取付面に前記ファンケースを取り付けた状態にて、前記ファン取付面を含む一平面がファンケースと交差するようにしたことである。
たとえば、右回りファンの場合では、ファンケースはバーナボディの右側に配設され、バーナボディの給気導入部のファン取付面は前方又は斜め右前方を向くように設置されるが、そのファン取付面を含む一平面をそのまま右側方又は斜め右後方へ延長させた延長上にファンケースが位置する配設態様とする。こうすることで、バーナボディ本体の上面における給気導入部の右側方又は斜め右後方がデッドスペースになることなく、ファンケース設置用スペースとして有効に活用することができるので、バーナボディ本体の上面に重なるファンケースの面積を多くでき、バーナボディとファンケースとを接合させた接合体の大きさを一層コンパクトにすることができる。
In the water heater, preferably, a plane including the fan mounting surface intersects the fan case in a state where the fan case is mounted on the fan mounting surface.
For example, in the case of a clockwise fan, the fan case is arranged on the right side of the burner body, and the fan mounting surface of the air supply introduction part of the burner body is installed so that it faces forward or diagonally right front. It is set as the arrangement | positioning aspect in which a fan case is located on the extension which extended the one plane containing a surface to the right side or diagonally right back as it is. By doing this, the right side or diagonally right rear of the air supply introduction part on the upper surface of the burner body main body can be effectively used as a space for installing the fan case without becoming a dead space. The area of the fan case that overlaps with the fan case can be increased, and the size of the joined body obtained by joining the burner body and the fan case can be made more compact.
上記給湯器において、好ましくは、ファンケースの前記空気吹出口の周囲には接続フランジが張り出しており、
前記接続フランジは、給気導入部のファン取付面に複数のビスにより固定され、
全てのビスの軸中心線を前方へ延長させた延長線上には、前記ケーシング本体の前記開口部が位置するように設定されていることである。
このものでは、給気導入部のファン取付面にファンケースの接続フランジを当接させてビス止めする際、あるいは、メンテナンス時等に接続フランジをファン取付面から取り外す際に、全てのビスに対して、ドライバー等の工具をケーシング本体の開口部から真っ直ぐに合わせることができるから、工具の使用時に、ケーシング本体の側壁の干渉を受けることがない。よって、ケーシングの開口部から工具を使用してのビスを締結或いは取り外しを容易に行うことができ、給気導入部のファン取付面へのファンケースの接続フランジの取付作業や取外し作業が容易となる。
In the above water heater, preferably, a connection flange projects around the air outlet of the fan case,
The connection flange is fixed to the fan mounting surface of the air supply introducing portion by a plurality of screws,
It is set so that the opening of the casing body is positioned on an extension line obtained by extending the axial center line of all screws forward.
In this case, when fixing the fan case contact flange to the fan mounting surface of the air supply inlet, or when removing the connection flange from the fan mounting surface during maintenance, etc. Thus, since a tool such as a screwdriver can be aligned straight from the opening of the casing main body, the side wall of the casing main body is not affected when the tool is used. Therefore, it is possible to easily tighten or remove a screw using a tool from the opening of the casing, and to easily attach or remove the connecting flange of the fan case to the fan mounting surface of the air supply introducing portion. Become.
上記給湯器において、好ましくは、前記ファンケースのうち、前記バーナボディ本体の側方に張り出している部分の下方に、燃焼用空気と燃料ガスとを混合させる混合装置が設けられている。
このものでは、ファンケースの下方の空いたスペースを有効利用することができ、ケーシングを一層小型化できる。
In the water heater, preferably, a mixing device for mixing combustion air and fuel gas is provided below a portion of the fan case that protrudes to the side of the burner body main body.
In this case, the empty space below the fan case can be used effectively, and the casing can be further miniaturized.
以上のように、本発明によれば、ファンケースは、バーナボディの側方にて、バーナボディ本体の上面にその一部が重なるように、且つ、バーナボディ本体の前後長さに収まるように設置されるから、バーナボディとファンケースとの接合体は前後方向及び左右方向にコンパクトに設定することができる。よって、これを収容するケーシングの奥行き及び幅も小さく設定することができ、ケーシングを小型化することができる。
また、ファンケースを取り付けるバーナボディの給気導入部のファン取付面は前方又は斜め前方に向くように設けられているから、ファンケースの接続作業やメンテナンス時の取外し作業等をケーシングの前方の開口部側から目で見ながら行うことができる。これにより、バーナボディへのファンケースの取付作業や取外し作業が容易となり、作業性が向上する。
As described above, according to the present invention, the fan case is located on the side of the burner body such that a part of the fan case overlaps the upper surface of the burner body main body and fits within the longitudinal length of the burner body main body. Since it is installed, the joined body of the burner body and the fan case can be set compactly in the front-rear direction and the left-right direction. Therefore, the depth and width of the casing that accommodates it can be set small, and the casing can be downsized.
In addition, since the fan mounting surface of the air supply introduction part of the burner body to which the fan case is attached is provided so as to face forward or obliquely forward, the fan case connection work or the removal work during maintenance can be performed at the front opening of the casing. This can be done while looking from the side. This facilitates the work of attaching and removing the fan case to the burner body, and improves workability.
次に、本発明の第１番目の実施の形態に係る給湯器について、添付図面を参照しながら具体的に説明する。
図１は、全一次空気燃焼式の平面バーナ(3)を有する潜熱回収型ガス給湯器を開閉扉(102)が設けられている正面側から見た模式図である。
ケーシング(100)は、前方に開口部(103)を有する矩形箱状のケーシング本体(101)と、開口部(103)を開閉する開閉扉(102)とを備えている。なお、本明細書では、ケーシング(100)の開閉扉(102)が設けられている側を正面側、開閉扉(102)と対向する側を背面側といい、これらが対向する方向を前後方向、前後方向と横方向に交差する方向を左右方向、前後方向と高さ方向に交差する方向を、上下方向という。
Next, the water heater according to the first embodiment of the present invention will be specifically described with reference to the accompanying drawings.
FIG. 1 is a schematic view of a latent heat recovery type gas water heater having an all-primary air combustion type planar burner (3) as viewed from the front side where an open / close door (102) is provided.
The casing (100) includes a rectangular box-shaped casing body (101) having an opening (103) in the front, and an opening / closing door (102) for opening and closing the opening (103). In this specification, the side of the casing (100) where the opening / closing door (102) is provided is referred to as the front side, and the side facing the opening / closing door (102) is referred to as the back side. The direction intersecting the front-rear direction and the lateral direction is referred to as the left-right direction, and the direction intersecting the front-rear direction and the height direction is referred to as the up-down direction.
ケーシング(100)内には、下向きの燃焼面(30)を有する平面バーナ(3)が備えられたバーナボディ(1)と、これに連通し且つ空気と燃料ガスの混合気をバーナボディ(1)の下方の平面バーナ(3)に送り込むファン（図示せず）が収容されたファンケース(2)とが左右に並列して設けられている。 In the casing (100), a burner body (1) provided with a planar burner (3) having a downward combustion surface (30), and a burner body (1 ) And a fan case (2) in which a fan (not shown) for feeding into the planar burner (3) below is accommodated in parallel on the left and right.
バーナボディ(1)の下方、すなわち、平面バーナ(3)の下方には、平面バーナ(3)からの燃焼排気で加熱される給湯用の第１及び第２熱交換器(31)(32)が設置され、ファンケース(2)の上流側には、ファンケース(2)に設けられた給気口(28)を介して、空気と燃料ガスとを混合させる混合装置(22)が連設されている。混合装置(22)には、空気が送られてくる給気管(23)と燃料ガスが流れてくるガス供給路(24)が連通している。 Below the burner body (1), that is, below the flat burner (3), are first and second heat exchangers (31) and (32) for hot water heated by combustion exhaust from the flat burner (3). A mixing device (22) that mixes air and fuel gas is connected to the upstream side of the fan case (2) via an air supply port (28) provided in the fan case (2). Has been. The mixing device (22) communicates with an air supply pipe (23) through which air is sent and a gas supply path (24) through which fuel gas flows.
平面バーナ(3)は、下向きに開口する多数の炎孔を有するセラミックス製の燃焼プレート、又は、金属線維をネット状に編み込んだ燃焼マットであり、下向きの燃焼面(30)を有すると共に、給気管(23)から混合装置(22)内に送り込まれる空気の全てを一次空気として燃料ガスと混合させて燃焼させる全一次空気燃焼式のバーナである。
混合装置(22)内で生成される混合気における空気の量と燃料ガスのガス量は、ファンケース(2)の上方に設けられ且つファンを回転させるモータ(M)の回転数を変更することにより調整可能となっている。
The planar burner (3) is a ceramic combustion plate having a number of downwardly opening flame holes, or a combustion mat in which metal fibers are knitted in a net shape, and has a downward combustion surface (30) and is fed. This is an all-primary-air combustion burner that mixes all of the air fed from the trachea (23) into the mixing device (22) with the fuel gas as primary air and burns it.
The amount of air and the amount of fuel gas in the air-fuel mixture generated in the mixing device (22) is to change the rotational speed of the motor (M) provided above the fan case (2) and rotating the fan. Can be adjusted.
第１熱交換器(31)は、ケーシング(100)の中間部に設置された顕熱回収型の熱交換器であり、第２熱交換器(32)は、第１熱交換器(31)の下部に連続する潜熱回収型の熱交換器であり、第２熱交換器(32)の上流側に連なる給水管(38)からの水を第２熱交換器(32)において平面バーナ(3)からの燃焼排気の潜熱で加熱した後、第１熱交換器(31)において燃焼排気の顕熱で加熱し、第１熱交換器(31)の下流側に連なる出湯管(39)から、所定の設定温度に加熱された温水が出湯される構成となっている。
第２熱交換器(32)を通過した燃焼排気は、排気ダクト(34)を介してケーシング本体(101)の頂面に突設されている排気筒(35)から外部に排出される。また、第２熱交換器(32)で発生したドレンは、図示しないが、ドレン受けに回収されて中和器で処理された後、外部へ排出される。
The first heat exchanger (31) is a sensible heat recovery type heat exchanger installed in the middle part of the casing (100), and the second heat exchanger (32) is the first heat exchanger (31). The latent heat recovery type heat exchanger that continues to the lower part of the second heat exchanger (32) is connected to the upstream side of the second heat exchanger (32) through the flat water burner (3 ) Is heated with the sensible heat of the combustion exhaust gas in the first heat exchanger (31), and from the outlet pipe (39) connected to the downstream side of the first heat exchanger (31), Hot water heated to a predetermined set temperature is discharged.
The combustion exhaust gas that has passed through the second heat exchanger (32) is discharged to the outside through an exhaust pipe (35) that protrudes from the top surface of the casing body (101) via an exhaust duct (34). In addition, although not shown, the drain generated in the second heat exchanger (32) is collected in the drain receiver and processed in the neutralizer, and then discharged to the outside.
第１番目の実施の形態に示す給湯器は、ファンケース(2)内に収容されているファンが右回りファンの場合であり、ケーシング(100)内にて、バーナボディ(1)の右側にファンケース(2)が、給気口(28)が下向きとなるように横倒し状態で配設される。 The water heater shown in the first embodiment is a case where the fan accommodated in the fan case (2) is a clockwise fan, and is located on the right side of the burner body (1) in the casing (100). The fan case (2) is disposed on its side so that the air supply port (28) faces downward.
バーナボディ(1)は、図２に示すように、上面の略中央部に導入口(120)が開設され、下面に平面バーナ(3)が取り付けられる略矩形状の扁平なバーナボディ本体(12)と、導入口(120)と連通状態にてバーナボディ本体(12)の上面に突設される給気導入部(11)とを備える。給気導入部(11)は、バーナボディ本体(12)の上面から突設する構成壁と、上方を閉塞する上壁(17)とから、導入口(120)へ開放する横断面略長円形の筒状体とし、図３に示すように、その長辺がバーナボディ本体(12)の前辺(14)に対して平面視で反時計回り方向に４５度傾斜する姿勢で設けられている。 As shown in FIG. 2, the burner body (1) has a substantially rectangular flat burner body body (12) in which an introduction port (120) is opened at a substantially central portion of the upper surface and a flat burner (3) is attached to the lower surface. ) And an air supply introduction section (11) projecting from the upper surface of the burner body main body (12) in communication with the introduction port (120). The air supply introduction part (11) has a substantially oval cross section that opens from the constituent wall protruding from the upper surface of the burner body main body (12) and the upper wall (17) closing the upper side to the introduction port (120). As shown in FIG. 3, the long side is provided in a posture inclined 45 degrees counterclockwise in plan view with respect to the front side (14) of the burner body main body (12). .
給気導入部(11)の上記構成壁のうち、前記長辺に沿った、斜め右前方を向く面を、後述するファンケース(2)の接続フランジ(21)が接続されるファン取付面(13)とし、バーナボディ本体(12)の前辺(14)に対して斜め４５度傾斜した姿勢で直立させている。そして、ファン取付面(13)の中心よりも後方へややずれた位置に空気取込口(10)が開口している。
ファン取付面(13)における、空気取込口(10)の上辺の両端近傍の所定位置には、位置決め突起(15a)(15b)がそれぞれ突設していると共に、これら一対の位置決め突起(15a)(15b)間の中央部と、空気取込口(10)の下辺の両側近傍の所定箇所には、それぞれネジ孔(16a)(16b)(16c)が形成されている。
なお、平面バーナ(3)の燃焼が終了した後、第２熱交換器(32)から上昇してくる酸性水蒸気がバーナボディ(1)から、ファンケース(2)、さらには、混合装置(22)内へ逆流しないように、逆流防止手段として逆止弁(50)が、空気取込口(10)から給気導入部(11)内に収容されている（図２参照）。
Of the constituent walls of the air supply introduction part (11), the surface facing the diagonally right front along the long side is a fan mounting surface to which a connection flange (21) of the fan case (2) described later is connected ( 13), the burner body main body (12) is upright in a posture inclined at an angle of 45 degrees with respect to the front side (14). The air intake port (10) opens at a position slightly deviated rearward from the center of the fan mounting surface (13).
Positioning projections (15a) and (15b) are provided at predetermined positions near both ends of the upper side of the air intake port (10) on the fan mounting surface (13), and the pair of positioning projections (15a ) (15b), and screw holes (16a), (16b), and (16c) are formed at predetermined locations near both sides of the lower side of the air intake port (10).
After the combustion of the flat burner (3) is finished, the acidic water vapor rising from the second heat exchanger (32) is transferred from the burner body (1) to the fan case (2) and further to the mixing device (22 ) As a backflow prevention means, a check valve (50) is housed in the air supply introduction section (11) from the air intake port (10) so that it does not flow back into the inside (see FIG. 2).
ファンケース(2)は、うずまき状のスクロールケーシングであり、ファンが収容される円盤状のファン収容部(27)の外径は、バーナボディ(1)のバーナボディ本体(12)の前後方向の長さより小さく設定されていると共に、ファン収容部(27)の外周面に続く下流側の流路(20)の開放端である空気吹出口（図示せず）は、ケーシング(100)の正面から見て斜め左後方に向かって開口している。
なお、流路(20)の開放端には略矩形状の接続フランジ(21)が外方に張り出しており、接続フランジ(21)をファン取付面(13)に対向させたとき、位置決め突起(15a)(15b)に対応する各箇所には、図２に示すように、これら位置決め突起(15a)(15b)が挿通可能な一対の位置決め孔(25a)(25b)が貫通していると共に、ネジ孔(16a)(16b)(16c)に対応する各箇所には、これらネジ孔(16a)(16b)(16c)に螺合可能なビス(5a)(5b)(5c)のネジ軸が挿通可能な３つのビス挿通孔(26a)(26b)(26c)が貫通している。
The fan case (2) is a spiral scroll casing, and the outer diameter of the disc-shaped fan housing part (27) in which the fan is housed is the front-rear direction of the burner body body (12) of the burner body (1). An air outlet (not shown) that is set to be smaller than the length and that is the open end of the downstream flow path (20) that follows the outer peripheral surface of the fan accommodating portion (27) extends from the front of the casing (100). Opening diagonally left rear as seen.
Note that a substantially rectangular connection flange (21) projects outwardly at the open end of the flow path (20), and when the connection flange (21) is opposed to the fan mounting surface (13), a positioning protrusion ( As shown in FIG. 2, a pair of positioning holes (25a) and (25b) through which these positioning protrusions (15a) and (15b) can be inserted pass through each portion corresponding to 15a and (15b), The screw shafts of screws (5a), (5b), and (5c) that can be screwed into these screw holes (16a), (16b), and (16c) are located at locations corresponding to the screw holes (16a), (16b), and (16c). Three screw insertion holes (26a), (26b) and (26c) that can be inserted pass therethrough.
ケーシング(100)のケーシング本体(101)に収容されている第１及び第２熱交換器(31)(32)の上方に取り付けられたバーナボディ(1)の給気導入部(11)の空気取込口(10)に、ファンケース(2)の前記空気吹出口が対応するように、接続フランジ(21)をファン取付面(13)に接続するには、ファン取付面(13)の位置決め突起(15a)(15b)を、接続フランジ(21)の位置決め孔(25a)(25b)にそれぞれ挿通させて、ファン取付面(13)に接続フランジ(21)を位置決め状態に重ね合わせる。この状態にて、ファン取付面(13)のネジ孔(16a)(16b)(16c)に、接続フランジ(21)のビス挿通孔(26a)(26b)(26c)が各々対応するように設定されているから、ケーシング本体(101)の開口部(103)側から、３つのビス(5a)(5b)(5c)を、接続フランジ(21)のビス挿通孔(26a)(26b)(26c)を介してネジ孔(16a)(16b)(16c)に螺合させれば、ファンケース(2)はバーナボディ(1)の空気導入部(11)の右側に連通状態に接続される。 Air in the air supply introduction section (11) of the burner body (1) mounted above the first and second heat exchangers (31) and (32) housed in the casing body (101) of the casing (100) To connect the connection flange (21) to the fan mounting surface (13) so that the air outlet of the fan case (2) corresponds to the intake port (10), positioning the fan mounting surface (13) The protrusions (15a) and (15b) are inserted into the positioning holes (25a) and (25b) of the connection flange (21), respectively, and the connection flange (21) is superimposed on the fan mounting surface (13) in the positioning state. In this state, set so that the screw insertion holes (26a) (26b) (26c) of the connection flange (21) correspond to the screw holes (16a) (16b) (16c) of the fan mounting surface (13). From the opening (103) side of the casing body (101), the three screws (5a) (5b) (5c) are connected to the screw insertion holes (26a) (26b) (26c) of the connection flange (21). ) Through the screw holes (16a), (16b), and (16c), the fan case (2) is connected in communication with the right side of the air introduction part (11) of the burner body (1).
給気導入部(11)のファン取付面(13)は、バーナボディ本体(12)の前辺(14)寄りの左右方向略中央部にて、斜め右前方を向く姿勢に傾斜状態にあると共に、これに接続させるファンケース(2)の接続フランジ(21)は、斜め左後方を向くように設けられているから、ファン取付面(13)に接続フランジ(21)をビス(5a)(5b)(5c)で接続させた状態にて、横倒し状態にあるファンケース(2)は、図３に示すように、下流側の流路(20)を含む所定範囲がバーナボディ本体(12)の上方に重なる取り付け態様となる。よって、バーナボディ(1)とファンケース(2)との接合体の左右方向の長さは、重なり合っている分だけ短くなる。また、ファンケース(2)のファン収容部(27)の外径は、バーナボディ本体(12)の前後方向の長さよりも小さく設定されているから、前記接合体の前後方向の長さは、バーナボディ本体(12)の前後方向の長さよりも長くなることはない。 The fan mounting surface (13) of the air supply introduction part (11) is inclined in a posture facing diagonally right front at a substantially central part in the left-right direction near the front side (14) of the burner body body (12). Since the connecting flange (21) of the fan case (2) to be connected to this is provided to face diagonally left rear, connect the connecting flange (21) to the fan mounting surface (13) with screws (5a) (5b ) (5c), the fan case (2) in the laid down state has a predetermined range including the downstream flow path (20) as shown in FIG. It becomes the attachment aspect which overlaps upwards. Therefore, the length in the left-right direction of the joined body of the burner body (1) and the fan case (2) is shortened by the overlapping amount. Further, since the outer diameter of the fan housing part (27) of the fan case (2) is set smaller than the length in the front-rear direction of the burner body body (12), the length in the front-rear direction of the joined body is The length of the burner body main body (12) is not longer than the length in the front-rear direction.
特に、前記接合体において、ファン取付面(13)を含む平面がファンケース(2)のファン収容部(27)を横切るように、ファンケース(2)はバーナボディ本体(12)の上面にセットされているから、バーナボディ本体(12)の上面にて、給気導入部(11)の斜め右後方がデッドスペースになることなく、ファンケース(2)のファン収容部(27)の一部を設置するスペースとして有効利用することができる。
このように、バーナボディ(1)にファンケース(2)を接合させた接合体の大きさは、ファン取付面(13)をバーナボディ本体(12)の前片(14)に対して左右側方に設ける構成のものに比べて、前後方向及び左右方向にコンパクトとなり、これを収容させるケーシングの奥行き及び幅も小さくすることができる。
In particular, in the joined body, the fan case (2) is set on the upper surface of the burner body main body (12) so that a plane including the fan mounting surface (13) crosses the fan housing portion (27) of the fan case (2). Therefore, on the upper surface of the burner body main body (12), a part of the fan housing part (27) of the fan case (2) does not become a dead space in the diagonally right rear of the air supply introduction part (11). Can be used effectively as a space to install.
Thus, the size of the joined body in which the fan case (2) is joined to the burner body (1) is such that the fan mounting surface (13) is positioned on the left and right sides with respect to the front piece (14) of the burner body body (12). Compared to the configuration provided on the side, it is compact in the front-rear direction and the left-right direction, and the depth and width of the casing that accommodates it can be reduced.
また、上記したように、バーナボディ(1)の給気導入部(11)のファン接続面(13)は、斜め前方に向くように傾斜させて設けられていると共に、それに設けられているネジ孔のうち、最も後方寄りに位置するネジ孔(16c)の中心線をケーシング(100)の前方へ延長させたときの延長線は、図３に示すように、ケーシング本体(101)の右側の側壁(104a)に交叉することなく、開口部(103)内に延長するように設定されている。これにより、ビス(5c)を、ネジ挿通孔(16c)を介してネジ孔(16c)に対応させ、ドライバー等の工具を利用して螺合させる際に、ケーシング本体(101)の側壁(104a)が邪魔になることなく、開口部(103)から、工具を、ビス(5c)の中心線上に位置させることができるので、最も奥に位置するビス(5c)を含む全てのビス(5a)(5b)(5c)の螺合又は取り外し作業をケーシング(100)の開閉扉(102)が設けられている正面の開口部(103)から容易に行うことができる。 Further, as described above, the fan connection surface (13) of the air supply introducing portion (11) of the burner body (1) is provided so as to be inclined obliquely forward, and the screws provided thereon Among the holes, the extension line when the center line of the screw hole (16c) located closest to the rear is extended to the front of the casing (100) is the right side of the casing body (101) as shown in FIG. It is set to extend into the opening (103) without crossing the side wall (104a). Thus, when the screw (5c) is made to correspond to the screw hole (16c) through the screw insertion hole (16c) and screwed using a tool such as a screwdriver, the side wall (104a ) Can be positioned on the center line of the screw (5c) from the opening (103) without obstructing all the screws (5a) including the screw (5c) located at the innermost position. The screwing or removing operation of (5b) and (5c) can be easily performed from the front opening (103) where the opening / closing door (102) of the casing (100) is provided.
この実施の形態の給湯器で出湯運転が行われると、給水管(38)から水が給水されると共に、平面バーナ(3)の点火動作が実行され、モータ(M)の駆動によりファンケース(2)内のファンが回転し、給気管(23)から外部の空気が混合装置(22)内に取り込まれると共に、ガス供給管(24)からの燃料ガスと混合されて燃焼用混合気が生成される。これら給水管(38)や給気管(23)やガス供給管(24)や混合装置(22)等は、ファンケース(2)の下方のスペースに設ける構成としておけば、ケーシング(100)内の空いたスペースを有効利用することができ、ケーシング(100)の大きさを一層小さくすることができる。 When the hot water supply operation is performed with the water heater of this embodiment, water is supplied from the water supply pipe (38), the ignition operation of the flat burner (3) is executed, and the fan case ( 2) The internal fan rotates and external air is taken into the mixing device (22) from the air supply pipe (23) and mixed with the fuel gas from the gas supply pipe (24) to produce a combustion air-fuel mixture Is done. If the water supply pipe (38), the air supply pipe (23), the gas supply pipe (24), the mixing device (22), etc. are arranged in the space below the fan case (2), the casing (100) The vacant space can be used effectively, and the size of the casing (100) can be further reduced.
上記第１番目の実施の形態のものでは、右回りのファンを採用した場合について説明したが、左回りのファンを採用する第２番目の実施の形態のものでは、図４に示すように、ファンケース(2)は、ケーシング(100)内にて、バーナボディ(1)の左側に位置させる。
このものでは、バーナボディ(1)としては、バーナボディ本体(12)のファン接続面(13)が斜め左前方を向いて位置する形状のものが採用可能であり、ファンケース(2)としては、流路(20)の開放端である空気吹出口は斜め右後方に向かって開口すると共にこれの周囲に張り出させている接続フランジ(21)も斜め右後方に向けたものが採用可能である。この実施の形態のものも、接続フランジ(21)を接続させるファン接続面(13)は、ケーシング(100)の斜め前方に向いており、接続フランジ(21)をケーシング(100)の開放部(103)側からビス止めする際に、最もケーシング(100)の奥側に位置するビスでも、ケーシング本体(101)の左側の側壁(104b)の干渉を受けることなく工具で締結或いは取り外しが出来るように設定されている。
In the first embodiment, the case where a clockwise fan is employed has been described, but in the second embodiment employing a counterclockwise fan, as shown in FIG. The fan case (2) is positioned on the left side of the burner body (1) in the casing (100).
In this case, as the burner body (1), it is possible to adopt a shape in which the fan connection surface (13) of the burner body main body (12) is located diagonally to the left front, and the fan case (2) The air outlet, which is the open end of the flow path (20), opens toward the diagonally right rear, and the connection flange (21) protruding around this can also be oriented diagonally to the right rear. is there. Also in this embodiment, the fan connection surface (13) to which the connection flange (21) is connected is directed obliquely forward of the casing (100), and the connection flange (21) is connected to the open portion of the casing (100) ( 103) When screwing from the side, it is possible to fasten or remove with a tool without receiving interference from the left side wall (104b) of the casing body (101) even with the screw located at the farthest side of the casing (100). Is set to
なお、上記各実施の形態では、バーナボディ本体(12)の上面から突設させる給気導入部(11)のファン接続面(13)をバーナボディ本体(12)の前辺(14)に対して平面視で斜め４５度傾斜する姿勢で設ける構成としたが、図５に示すように、ファン接続面(13)がバーナボディ本体(12)の前辺(14)に平行に位置するように、給気導入部(11)を正面に向けて設置しても良い。この場合では、接続フランジ(21)のファン接続面(13)への取付け又は取り外しを、ケーシング(100)の開放部(103)側から一層容易に行うことが可能となる。 In each of the above embodiments, the fan connection surface (13) of the air supply introducing portion (11) that protrudes from the upper surface of the burner body main body (12) is connected to the front side (14) of the burner body main body (12). However, as shown in FIG. 5, the fan connection surface (13) is positioned parallel to the front side (14) of the burner body main body (12), as shown in FIG. The air supply introduction section (11) may be installed facing the front. In this case, it is possible to more easily attach or remove the connection flange (21) to or from the fan connection surface (13) from the open part (103) side of the casing (100).
上記したように、ファンの回転方向に応じたファンケース(2)及びバーナボディ(1)を設けると共に、第１、第２番目の実施の形態のものも、第３番目の実施の形態のものも、給気導入部(11)の一側面に形成され且つ接続フランジ(21)をビス止めするファン接続面(13)を、ケーシング(100)の斜め前方又は前方に向けて位置させることにより、ファンケース(2)の一部がバーナボディ本体(12)に重なり合うように両者を接続させることができるから、バーナボディ(1)とファンケース(2)の接合体をコンパクト化でき、それを収容させるケーシング(100)も小型化することができる。
また、ファンの回転方向に関係なく、ファンケース(2)の接続フランジ(21)とバーナボディ(1)のファン取付面(13)との接続作業や取外し作業を、ケーシング(100)の正面側の開口部(103)から目で確認しながら行うことができると共に、ケーシング(100)の側壁(104a)又は(104b)が工具の使用の邪魔になることはないから、ファンケース(2)のバーナボディ(1)への組み付け及びメンテナンス時の取り外しが容易となり、作業性が向上する。
As described above, the fan case (2) and the burner body (1) corresponding to the rotation direction of the fan are provided, and the first and second embodiments are the same as the third embodiment. The fan connection surface (13) formed on one side surface of the air supply introduction portion (11) and screwing the connection flange (21) is positioned diagonally forward or forward of the casing (100), Since the fan case (2) can be connected so that a part of the fan case (2) overlaps the burner body body (12), the joined body of the burner body (1) and fan case (2) can be made compact and accommodated. The casing (100) to be made can also be reduced in size.
Also, regardless of the direction of fan rotation, connection and removal work between the connection flange (21) of the fan case (2) and the fan mounting surface (13) of the burner body (1) Since the side wall (104a) or (104b) of the casing (100) does not interfere with the use of the tool, it can be performed while visually checking from the opening (103) of the fan. Assembly to the burner body (1) and removal during maintenance become easy, improving workability.
(1) ・・・・・・・・バーナボディ
(10)・・・・・・・・空気取込口
(11)・・・・・・・・給気導入部
(12)・・・・・・・・バーナボディ本体
(13)・・・・・・・・ファン取付面
(2) ・・・・・・・・ファンケース
(3) ・・・・・・・・平面バーナ
(30)・・・・・・・・燃焼面
(100) ・・・・・・・ケーシング
(101) ・・・・・・・ケーシング本体
(102) ・・・・・・・開閉扉
(103) ・・・・・・・開口部
(1) ・ ・ ・ ・ ・ ・ ・ ・ Burner body
(10) ... Air intake
(11) ... Air supply introduction part
(12) ... Burner body
(13) ... Fan mounting surface
(2) ... Fan case
(3) ・ ・ ・ ・ ・ ・ ・ ・ Planar burner
(30) ... combustion surface
(100) ...
(101) ...
(102) ・ ・ ・ ・ ・ ・ ・ Opening and closing doors
(103) ・ ・ ・ ・ ・ ・ ・ Opening
Claims (4)
下向きの燃焼面を有する平面バーナが備えられたバーナボディと、
前記バーナボディと連通すると共に、ファンを回転させるモータが上方に設けられ且つ空気を取り込む給気口が下方に開放するように横倒し状態に設置されるファンケースと、
前記ファンケース内に収容され且つ燃焼用空気と燃料ガスの混合気を前記バーナボディ内へ送り込むファンとを備える給湯器であって、
前記ファンは前記モータ側から見た平面視にて右回り又は左回りの遠心ファンであり、これが収容されるファンケースはスクロールケーシングであり、
前記バーナボディは、下面に前記平面バーナを有するバーナボディ本体と、前記バーナボディの上面の所定位置に連通状態で突設され且つ前記ファンケースの空気吹出口と対向する空気取込口が側方に開口する給気導入部とからなり、
前記給気導入部のうち、前記空気取込口が開口している側面をファン取付面とし、
前記ファンが右回りファンの場合は、前記ファンケースは前記バーナボディの右側に設置されると共に、前記ファン取付面は前方又は斜め右前方を向いて設けられ、左回りファンの場合は、前記ファンケースは前記バーナボディの左側に設置されると共に、前記ファン取付面は前方又は斜め左前方を向いて設けられる給湯器。 In a casing having a casing body having an opening in the front and an opening / closing door for opening and closing the opening,
A burner body with a planar burner having a downward burning surface;
A fan case that communicates with the burner body and that is provided in a lying state so that a motor that rotates the fan is provided above and an air supply port that takes in air opens downward,
A water heater comprising a fan housed in the fan case and sending a mixture of combustion air and fuel gas into the burner body,
The fan is a clockwise or counterclockwise centrifugal fan in a plan view seen from the motor side, and a fan case in which the fan is accommodated is a scroll casing,
The burner body has a burner body main body having the planar burner on the lower surface, an air intake port that protrudes in a communicating state at a predetermined position on the upper surface of the burner body and faces the air outlet of the fan case, And an air supply introduction part that opens to
Of the air supply introduction part, the side surface of the air intake opening is a fan mounting surface,
When the fan is a clockwise fan, the fan case is installed on the right side of the burner body, and the fan mounting surface is provided facing forward or diagonally right front. When the fan is a counterclockwise fan, the fan The case is installed on the left side of the burner body, and the fan mounting surface is provided in a front or diagonally left front direction.
前記接続フランジは、給気導入部のファン取付面に複数のビスにより固定され、
全てのビスの軸中心線を前方へ延長させた延長線上には、前記ケーシング本体の前記開口部が位置するように設定されている給湯器。 In the water heater according to claim 1 or 2, a connection flange projects around the air outlet of the fan case,
The connection flange is fixed to the fan mounting surface of the air supply introducing portion by a plurality of screws,
A water heater set so that the opening of the casing body is positioned on an extension line obtained by extending the axial center line of all screws forward.
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| KR1020187011060A KR102580551B1 (en) | 2015-10-26 | 2016-10-24 | hot water heater |
| US15/770,506 US10605485B2 (en) | 2015-10-26 | 2016-10-24 | Water heater |
| CN201680062556.0A CN108351103B (en) | 2015-10-26 | 2016-10-24 | Water heater |
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| JP7124335B2 (en) * | 2018-02-20 | 2022-08-24 | 株式会社ノーリツ | water heater |
| KR102017577B1 (en) * | 2018-03-19 | 2019-09-03 | 최영환 | Hot Water Boiler having Function for Proportional Control of Calorific Value and Function for Preventing Backflow of Gas |
| JP2022098738A (en) * | 2020-12-22 | 2022-07-04 | 株式会社ノーリツ | Combustion device and hot water device |
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